blob: 1a14eac950e13c857a2277ad775ee4f7fc5c8585 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_CONVERSIONS_CONVERSION_POLICY_H_
#define CONTENT_BROWSER_CONVERSIONS_CONVERSION_POLICY_H_
#include <stdint.h>
#include <memory>
#include <string>
#include <vector>
#include "base/time/time.h"
#include "content/browser/conversions/conversion_report.h"
#include "content/common/content_export.h"
namespace content {
// Class for controlling certain constraints and configurations for handling,
// storing, and sending impressions and conversions.
class CONTENT_EXPORT ConversionPolicy {
public:
// Helper class that generates noised conversion data. Can be overridden to
// make testing deterministic.
class CONTENT_EXPORT NoiseProvider {
public:
NoiseProvider() = default;
virtual ~NoiseProvider() = default;
// Returns a noise value of |conversion_data|. By default, this reports
// completely random data for 5% of conversions, and sends the real data for
// 95%. Virtual for testing.
virtual uint64_t GetNoisedConversionData(uint64_t conversion_data) const;
};
static std::unique_ptr<ConversionPolicy> CreateForTesting(
std::unique_ptr<NoiseProvider> noise_provider);
ConversionPolicy();
ConversionPolicy(const ConversionPolicy& other) = delete;
ConversionPolicy& operator=(const ConversionPolicy& other) = delete;
virtual ~ConversionPolicy();
// Get the time a conversion report should be sent, by batching reports into
// set reporting windows based on their impression time. This strictly delays
// the time a report will be sent.
virtual base::Time GetReportTimeForConversion(
const ConversionReport& report) const;
// Maximum number of times the an impression is allowed to convert.
virtual int GetMaxConversionsPerImpression() const;
// Given a set of conversion reports for a single conversion registrations,
// assigns attribution credits to each one which will be sent at report time.
// By default, this performs "last click" attribution which assigns the report
// for the most recent impression a credit of 100, and the rest a credit of 0.
virtual void AssignAttributionCredits(
std::vector<ConversionReport>* reports) const;
// Gets the sanitized conversion data for a conversion. This strips entropy
// from the provided to data to at most 3 bits of information.
virtual std::string GetSanitizedConversionData(
uint64_t conversion_data) const;
private:
// For testing only.
ConversionPolicy(std::unique_ptr<NoiseProvider> noise_provider);
std::unique_ptr<NoiseProvider> noise_provider_;
};
} // namespace content
#endif // CONTENT_BROWSER_CONVERSIONS_CONVERSION_POLICY_H_
|
